#include <stdio.h>
int age(int ithPerson)
{
	if (ithPerson == 1)
	{
		return 10;
	}
	return age(ithPerson - 1) + 2;
}
int  main()
{
	int ith = 5;
	printf("%d\t\n", age(ith));
	return 0;
}

